Annelated dehydroannulenes fused with azulene ring. The synthesis of bisdehydro[14]- and -[16]annuleno[a]azulene
作者:Hiroyuki Higuchi、Jūro Ojima、Masafumi Yasunami、Kunihide Fujimori、Masaaki Yoshifuji
DOI:10.1016/0040-4039(94)88038-7
日期:1994.2
10,12-Bisdehydro-3-isopropyl-9,14-dimethyl[14]- and -11,16-dimethyl[16]annuleno[a]azulene in which the conjugated 14- and 16-membered rings are fused to azulene ring, have been synthesized. It was found that the fusion of azulene ring suppresses the diatropicity of [4n+2], 14π-electron system to a smaller extent than benzene ring.
10,12-双去氢-3-异丙基-9,14-二甲基[14]-和-11,16-二甲基[16]环戊[a] az烯,其中共轭的14和16元环稠合到z环上,已经合成。研究发现,与苯环相比,a环的稠合抑制了[4n + 2],14π-电子体系的变径作用。